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Finding the Fourth Proportional to 20,063.94, 30,081.25 and 12,278.22

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Solution

The fourth proportional to 20,063.94, 30,081.25 and 12,278.22 is: 18,408.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,063.94 : 30,081.25 = 12,278.22 : x
  2. Step 2: Convert to fraction form
    20,063.94/30,081.25 = 12,278.22/x
  3. Step 3: Cross multiply
    20,063.94x = 30,081.25 × 12,278.22
  4. Step 4: Simplify right side
    20,063.94x = 369,344,205.38
  5. Step 5: Solve for x
    x = 369,344,205.38/20,063.94
  6. Step 6: Final answer
    x = 18,408.36

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.